The part about the eyes not focusing near the pillars makes so much sense.
I've often griped about how hard it is to see out of modern cars with thick airbag-equipped pillars, but still wondered how I managed to "miss" something that clearly cannot completely hide in an A-pillar. (eg, because the pillar is diagonal, the pedestrian's head or feet or both will still be visible even if their midsection is obscured.
I used to commute through an area with an endless sea of stop signs, which almost NEVER had cross traffic. My car had a rearview mirror that came down too far and tended to block part of my view forward and to the right, and sometimes pedestrians or cross traffic would 'hide' in the pillars. It's one of those things where, if there had been no stop signs, I would have been much more likely to notice cross traffic, but having to look at the sign and stop line takes your focus for that last 2-3 seconds as you slow to a stop, so even if you're "sure" you scanned for peds/cross traffic, maybe once every 6 months I would begin to proceed and then suddenly see the movement of a vehicle or person in my peripheral vision.
Those pillars and the rearview mirror didn't block what i was looking for, but they must have cued my eyes to not look 'too close' to them. Interesting.